1834 - Thomas Davenport of Vermont developed the first real electric motor ('real' meaning powerful enough to do a task) although Joseph Henry and Michael Faraday created early motion devices using electromagnetic fields.
Below is a more detailed usage of operating systems according to age group: 18 to 34 years old. Of all the smartphone users, 50% use Android as operating system, 43% use iPhone, 39% use Microsoft and 38% use RIM. Apparently, more users prefer Android.
About This Statistic. This graph shows the average age of desktop personal computers in the United States, from 2016 to 2021. The source estimates that by the end of 2017 the average desktop PC will have been operating for 4.32 years. Aging equipment is more likely to break down or need replacing, service costs are often higher as hardware and software manufacturers are less likely to support the product in the event of failure.